Question

the product of two rational number is - 15/20. if one of them is - 10/7, find the other. ​

Answer 1

Answer:

Let the rational no be x and y

x=-10/7

Product of two rational no is -15/20

x × y = -3/4. ( -15/20 = -3/4)

-10/7 × y = -3/4

y = -3/4 ÷ -10/7

y = -3/4 × -7/10

y = 21/40

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